Play selected channel solo in VSE?
No way to natively hide/mute channels. Only strips:

'H' &amp; 'Alt+H' will mute/hide &amp; unmute/unhide a strip.

'Shift+H &amp; 'Shift + Alt + H" the same, but inverts selection.

However, this add-on can mute/hide entire channels:
https://github.com/venomgfx/addonitos/blob/master/space_sequencer_channel_tools.py